ESP-Prog is one of Espressif’s development and debugging tools, with functions
including automatic firmware downloading, serial communication, and JTAG
online debugging. ESP-Prog’s automatic firmware downloading and serial
communication functions are supported on both the ESP8266 and ESP32
platforms, while the JTAG online debugging is supported only on the ESP32
platform. Vendor information…

macOS contains default FTDIUSBSerialDriver driver which conflicts with
debug tools which are based on this chip. FTDI Chip company recommends
removing this default driver from a system. Everything should work after
system rebooting. See detailed instruction in official application note
(Page 16, Section 4: Uninstalling FTDI Drivers on OS X)
AN134: FTDI Drivers Installation guide for MAC OS X

Espressif Systems is a privately held fabless semiconductor company. They provide wireless communications and Wi-Fi chips which are widely used in mobile devices and the Internet of Things applications.